SA618F30-C1 High Quality 1W High-Power Full-Duplex Audio Transmission Module

SA618F30-C1 High Quality 1W High-Power Full-Duplex Audio Transmission Module

SA618F30-C1 is an upgraded, cost-effective, high-integration, high-power full-duplex intercom module from NiceRF. It features a built-in high-speed microcontroller, audio Codec, echo cancellation circuit, ESD protection, high-performance RF chip, and amplifier. The module provides a standard serial port for communication, allowing users to easily configure parameters and control transmission and reception functions. By connecting an audio amplifier, microphone, and speaker, it can function as a compact intercom. Its simplified interface and ultra-compact size make it suitable for various applications, enabling seamless integration into handheld devices to enhance the overall performance of terminal products.

SA618F30-C1 full-duplex intercom module supports 8 users for simultaneous high-quality calls, featuring 8-channel concurrent functionality with unlimited reception, ensuring each user enjoys an excellent audio experience. Audio quality during 8-channel concurrent use is much better than other similar products.

SA618F30-C1 is produced and tested using lead-free processes, complying with RoHS and REACH standards.

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Parameter	Test Conditions	Min.	Typ.	Max.	Unit
Operating voltage		3.3	4.2	5.5	V
working temperature		-30	25	70	℃
Current consumption
Sleep current			10	20	uA
RX current	@ No audio output		50	55	mA
TX current	4v,@30dBm		160		mA
RF parameter
Operating frequency	UHF	410		490	MHz
Customizable frequency		150		960	MHz
Default shipping frequency	UHF ( 1MHz interval)	440.125		455.125	MHz
Transmit power	@5V	16		32	dBm
Bandwidth（BW)			500		KHz
Receiving sensitivity			-117		dBm
Audio parameters
Modulation sensitivity			10	100	mV
Receive signal-to-noise ratio(SNR)			90		dB
Frequency response		60		3800	Hz
Audio output（line out)	Load 16 Ω			40	mW
	8 channels	160	200	240	ms

Features

Frequency Band 410~490MHz(customizable 150-960 MHz) Up to 8 devices transmit simultaneously ( Receive unlimited)
Echo cancellation function
VOX function
Mesh Network
I2S Digital audio & analog audio
Line In + Mic - input
Full duplex data transmission;
Support data transmission
Sleep low power consumption
Support OTA &Serial upgrade
3-4KM transmission distance in the open area
High integration and small size

Applications

High-quality full duplex walkie talkie
Conference telephone system
Building community security system
Security intercom system for special scenarios
Earphone walkie talkie
Special job assignment walkie talkie

Analog input & output application circuit

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I2S Input & output application circuit

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Pin NO.	Pin name	I/O	Description
1	TXLED	O	Transmitting indicator, connected with external led, turn on by low level output when data or voice is transmitting, (suggest 1K ohm resistor for current limitation)
2	RST	I	Module reset pin, externally pull down for more than 5ms will reset the module
3, 6, 10, 12,15,19	GND		Ground
4	MIC_N_IN	I	Negative electrode of external microphone, serial connected with 220 nH inductance, refer to below typical circuit.
5	MIC_P_IN	I	Positive electrode of external microphone, serial connected with 220 nH inductance, refer to below typical circuit.
7	Aux_IN	I	External audio input signal, maximum 1 VRMS
8	LINE_OUT	O	External 16-ohm headphones can be connected, requiring an additional LC low-pass filter circuit to eliminate RF interference. Refer to the typical circuit.
9	Reserved		Module test pins should be left unconnected by the user.
11	+3.3V Out	O	3.3v regulator out, maximum 50mA loading
13	ANT		Connected with 50ohm Antenna
14	VCC		Power supply ( 3.3 – 5.5V )
16	SDIN	I	Connected with External I2S device, ( 0 – 3.3V )
17	BCLK	O
18	WS	O
20	SD	O
21	PTT	I	module transmit pin is pulled low to enter transmit mode, with an internal pull-up resistor, defaulting to a high-level output
22	TXD	O	Serial transmit pin (voltage 0-3.3V)
23	RXD	I	Serial receive pin (voltage 0-3.3V)
24	MCLK	O	Connected with External I2S device (0-3.3V)
25	RXLED	O	Receiving indicator, connected with external led, turn on by low level output when data or voice received, (suggest 1K ohm resistor for current limitation)
26	CS	I	module sleep pin operates at high level for normal function and low level for sleep mode. It has an internal pull-up resistor, defaulting to high level

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SA618F30-C1 High Quality 1W High-Power Full-Duplex Audio Transmission Module

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